linux-kernel - Re: [patch] revert: [NET]: Fix races in net_rx

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Message-ID: <20070718164341.GA6327@elte.hu>
Date:	Wed, 18 Jul 2007 18:43:41 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Olaf Kirch <olaf.kirch@...CLE.COM>
Cc:	Jarek Poplawski <jarkao2@...pl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, davem@...emloft.net
Subject: Re: [patch] revert: [NET]: Fix races in net_rx_action vs netpoll


* Olaf Kirch <olaf.kirch@...CLE.COM> wrote:

> > also, i'm using netconsole via the command line (both the network 
> > driver and netconsole is built into the bzImage), maybe that makes a 
> > difference?
> 
> Possibly - but so far there's nothing in the code that jumped at me.
> 
> Can you try the following please? I'm still pretty much in the dark; 
> so I'm adding a bunch of printks. Let's hope this doesn't change the 
> timing in a way that makes the bug disappear.

hm ... the box wouldnt even boot up because the 'keep on polling' and 
'done' messages are scrolling across so fast. Perhaps every printk 
triggers a packet which triggers another printk ... etc?

here's the 15MB log of it:

  http://redhat.com/~mingo/misc/100hz.3.log.bz2

	Ingo
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